Thermoplastic polyurethane molding composition

US5216062A · kind A · utility

Assignee

• BASF SE

Inventors

• Dietrich Lausberg · Ludwigshafen, DE
• Rolf Steinberger · Schifferstadt, DE
• Gerhard Bittner · Diepholz, DE
• Bernd Lukassen · Georgsmarienhütte, DE

Key dates

• Filing date: Jul 30, 1992
• Grant date: Jun 1, 1993
• Expiry date: Jul 30, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L75/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A thermoplastic molding composition was composed of PA0 A: 20-90% by weight of a thermoplastic polyurethane, PA0 B: 1-40% by weight of an elastomeric graft copolymer formed from PA0 b.sub.1 : 50-90% by weight of a grafting base comprising an elastomeric polymer which has a glass transition temperature of below -20.degree. C. and is based on butadiene or a C.sub.2 -C.sub.10 -acrylate and, if desired, a crosslinking agent and PA0 b.sub.2 : 10-50% by weight of a graft superstratum formed from styrene and acrylonitrile in the ratio of from 85:15 to 60:40 or styrene or methyl methacrylate, and PA0 C: 5-75% by weight of a copolymer formed from PA0 c.sub.1 : 55-90% by weight of .alpha.-methylstyrene and PA0 c.sub.2 : 10-45% by weight of acrylonitrile or methacrylonitrile or a mixture thereof, and PA0 D: up to 50% by weight of a reinforcing filler.